Check the listing for details. B&G Halcyon Gyro Processor Computer Unit. Condition: Used. Listed at 149.95 USD. Up for sale is a used B&G Halcyon Gyro Processor Unit. This was removed from a working system for upgrade but we are not able to test and confirm operation. Buyer has 60 days to return free of charge for full refund in the case of any issues. FAST FREE USA SHIPPING AND COMPLETE SATISFACTION GUARANTEED! We offer 100% free domestic returns for ANY reason within 60 days. To help you get your items quickly, most items ship out same day as purchase if checkout is completed by 3PM Central. We ship purchases Monday-Friday, as well as most Saturday mornings. Please note that sales tax is collected automatically through eBay based on your location. It is refunded in the event of a cancellation or return, however we cannot make alterations to the amount of tax you pay at time of purchase.